A/N: Just saw the teaser for My Sister's Keeper, loved it, thought about the million and one things I have to do before I can write fanfiction as a responsible college student, and started writing anyway! Screw chemistry and business stat; this is more fun!

Disclaimer: None of these characters belong to me and I am making no profit from their use.

"Ugh." Cody Martin groaned, staggering into his cabin and depositing his armload of books on his bed. "Is it me, or is Tutweiller becoming more of a hardass?"

His roommate Woody turned around in his chair. "Hey Buddy…" Cody raised his eyebrows nervously. When Woody got that anxious, over-friendly expression, it usually meant he needed a favor. Usually a homework-related favor, but occasionally, something more ridiculous, reckless, or just plain stupid. "Hey… Woody… What's going on?" he asked tentatively, already certain that he didn't want to know.

"Not much…" Woody hedged. Cody waited for the shoe to drop. "But I just found out my sister is coming to visit the ship tomorrow." Woody said. "Is it cool if she stays in our cabin for a few days?"

"Sure." Cody shrugged. He'd never met his roommate's sister, but Woody talked about her occasionally. All he really knew was that she was close to their age. He could only imagine what she would be like; it was almost impossible to imagine a girl version of Woody. Well, it wasn't impossible, but it was certainly unpleasant. At any rate she couldn't be any worse than Woody, could she? "I guess that's fine."

"Great!" Woody smiled. Then the over-friendly expression crept back onto his face. "And… I kind of need a favor."

"Rats!" Cody's shoulders slumped. "I was hoping that was the favor."

"Nope." Woody said cheerfully. "Here's the thing: I kind of have detention after school on Friday, and on Saturday afternoon-"

"How did that happen?" Cody interrupted in disbelief. Woody wasn't a great student, but you had to do worse than forget a few assignments to get Saturday detention.

"Well, me and Zack-" Woody began.

"Ahhh. Say no more." Cody nodded his understanding.

"Yeah… it was just supposed to be a little prank, but… well let's just say it explains why Tut's in such a bad mood." Woody said repentantly.

Cody frowned. "So how come Zack doesn't have detention?"

"Zack can run faster." Woody reminded him.

"Of course. Sorry. You were saying?"

"Yeah, so I have detention Friday and Saturday," Woody continued where he'd left off, "And I was wondering if you could show my sister around the ship, sort of take her under your wing. You know, since I won't be able to, and she'll know you, since she's staying here and all...?" Woody looked up at him hopefully. "Plus you have no social life so it's not like you have any weekend plans."

Internally, Cody groaned. Sadly, Woody was correct that he had nothing better to do this weekend… But playing tour guide for a female Woody all weekend didn't sound particularly appealing. "Gee, Woody, I don't know…"

"Come on, buddy, it's just a couple of days." Woody pleaded.

"Yeah, but-"

"I didn't want to bring this up, but you owe me a solid." Woody said, folding his arms in front of him.

"What?" Cody retorted, "How do I 'owe you a solid'?"

"I…" Woody frowned, mentally searching for a reason that Cody owed him. "I saved Buck the rat when he was stuck on top of the Sky Deck sign."

"No you didn't." Cody deadpanned. "That was Ratman."

"But I…" Woody began. "I… Oh, I can't believe you're forcing me to reveal my secret identity. Cody…" he lowered his head dramatically. "I am Ratman."

Cody rolled his eyes. "No! Really?"

"Yes." Woody insisted seriously. "I saved your rat, and I am calling in my favor."

Cody sighed. "Okay, fine, fine. I'll hang out with your sister when she gets here."

Woody grinned. "Thanks, man. Hey, I think you'll really like her. She's a lot like me."

Cody grimaced. "Yeah…" he muttered to himself. "That's what I was afraid of."